基于小波分析的涡流信号去噪处理  

WAVELET ANALYSIS BASED DENOISING OF EDDY CURRENT SIGNALS

作　　者：林俊明[1] 余兴增[1] 林春景[1] 方松利 吴宇坤 董振军 

机构地区：[1]爱德森(厦门)电子有限公司,厦门361001 [2]广东核电合营有限公司,深圳518124

出　　处：《无损检测》2003年第5期257-259,共3页Nondestructive Testing

摘　　要：涡流检测方法是常规无损检测技术之一。但微小裂缝、穿孔引起的涡流检测信号很微弱 ,容易被各种噪声湮没 ,分辨起来较困难。用小波分析方法对涡流信号进行处理 ,能分辨出较微弱的缺陷信号 ,得到比较满意的结果。Eddy current testing is one of the common nondestructive testing technologies. The eddy current signals from thin flaws and perforations are merged by noises and difficult to be distinguished. Weak eddy current signals can be identified by wavelet analysis.

关 键 词：涡流检验 信号处理 降噪 缺陷识别 小波分析 无损检测 

分 类 号：TG115.28[金属学及工艺—物理冶金]